کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2485071 1114344 2012 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Grafting of Cell-Penetrating Peptide to Receptor-Targeted Liposomes Improves their Transfection Efficiency and Transport across Blood-Brain Barrier Model
موضوعات مرتبط
علوم پزشکی و سلامت داروسازی، سم شناسی و علوم دارویی اکتشاف دارویی
پیش نمایش صفحه اول مقاله
Grafting of Cell-Penetrating Peptide to Receptor-Targeted Liposomes Improves their Transfection Efficiency and Transport across Blood-Brain Barrier Model
چکیده انگلیسی
We report bifunctional liposomal delivery system, combining transferrin (Tf)-mediated receptor targeting and poly-l-arginine (PR)-facilitated cell penetration, which overcomes the drawback of saturation of delivery. PR was conjugated to the distal end of distearoyl phosphoethanolamine-polyethylene glycol (PEG) 2000 and was incorporated with other phospholipids in chloroform/methanol (2:1) to form PR liposomes using thin-film hydration technique. Tf-PEG phospholipid micelles were incorporated into PR liposomes using postinsertion technique to form Tf-PR liposomes. The bifunctional liposomes demonstrated significantly (p < 0.05) higher cellular uptake by brain endothelial cells (bEnd.3) and about eightfold higher transfection in primary culture of glial cells as compared with the Tf liposomes. Cell viabilities of Tf-conjugated and bifunctional liposomes were not markedly different; however, transport across in vitro blood-brain barrier model improved considerably after dual modification. The study underlines the potential of bifunctional liposomes as high-efficiency and low-toxicity gene delivery system for the treatment of central nervous system disorders. © 2012 Wiley Periodicals, Inc. and the American Pharmacists Association.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Pharmaceutical Sciences - Volume 101, Issue 7, July 2012, Pages 2468-2478
نویسندگان
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